Qualitative and quantitative phenotype of Kai Tor-Kai Tang (Gallus gallus) in the lower-northern region of Thailand

Abstract. Incharoen T, Nakhen W, Yaemkong S. 2022. Qualitative and quantitative phenotype of Kai Tor-Kai Tang (Gallus gallus) in the lower-northern region Thailand. Biodiversitas 23: 5387-5395. The (KT) chicken is a crossbreed between an indigenous domestic village breed local wild red junglefowl. Colorful plumage, crowing voice, large single comb are specific characteristics phenotype. Due to their populations, there clear need improve qualitative understanding these chickens. A study variation may be advantageous approach conservation preservation breed, as well social commercial utilizations rural communities. This aimed characterize phenotypes KT populations reared Thailand, which includes Phetchabun, Phitsanulok, Phichit, Sukhothai, Uthai Thani, Uttaradit provinces. total 100 chickens from 35 farms were characterized under field conditions for 12 2 traits. Frequencies means calculated phenotypical characteristics. Correlation coefficients affecting factors factor evaluated traits among them. results indicated that most prominent colors earlobe, around eyes, beak, shank (38%), orange (54%), brown (64%), grey (56%), respectively. main color neck back plumage was brown-yellow (49% 31%, respectively), both long curving tail black-green (96%), wing (79%) while 49.26%, 99% 73% had Jak Kod Hna comb, normal spur type, Plod plods scale overall mean body weight age 1.07 ± 0.2 kg 11.99 7.4 months. highest correlation (r: 1; p<0.01) observed tail. whole significant effect on long-curving (p<0.05), all farm sizes earlobe (p<0.05).